当我看着这个世界时,我是悲观的,但当我看着人们时,我是乐观的。
人类唯一需要恐惧的,就是恐惧本身。
The challenge in science is not just to find answers but to understand their deeper implications.
"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."